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经国家标准局批准,采用国际标准的普通磨料新国标(1983年批准)已经发布,1984年开始实施。新国标的磨料粘度及其组成完全等效采用了国际标准(草案),即1982年11月在维也纳召开的国际标准第27届会议通过的美国提案ISO/TC29/SC5(US—22)295。
With the approval of the National Bureau of Standards, a new national standard for general abrasives (approved in 1983) that adopts international standards has been released and implemented since 1984. The new national standard’s abrasive viscosity and its composition are completely equivalent to the international standard (Draft), the US proposal ISO/TC29/SC5 (US-22)295 adopted at the 27th International Standard Conference held in Vienna in November 1982.